smith



H. SMITH. VIBRATION TRANSFERHING MEANS,

APPLICATION FILED AUG.23. I916.

.latentud Aug. 19, 1919.

'the body portion of HABALID SMITH, OF COPENHAGEN, DENMARK.

VIBBATION-TRANSFERRING MEANS.

Patented Aug. 19, 1919.

Serial No. 118,425.

1,313 ,751 Specification of Letters Patent.

Application filed August 23, 1916.

through the closed by said member projects duaopenlng of the same to engage the phragm of-the talking machine.

In the following I have specificall described certain forms of my invention, lint it will be understood that the invention is not limited to the hereindescribed particular applications or employment of the same.

Further features and objects of the invention will be more fully understood from the following detail description and the accompanying ich- To all whom it may concern:

Be it known that I, HARALD SMITH, a subject of the King of Denmark, residing at Copenhagen, Denmark, at 1. Tranevei, have invented certain new and useful Improvements in Vibration-Transferring Means, of which the following is a specification.

The invention relates to vibration transferring means.

More particularly, the invention is directed to means for transferring vibrations from one diaphragm, or equivalent element, to another diaphra or equivalent element. form of the invention applicable for use with a telephone receiver comprises a hollow symmetrical member having an opening 0 predetermined cross section and having its body portion attached or otherwise seen to the diaphragm or equivalent member, desired to be actuated in correspondence to the vibrations of the diaphragm of the telephone receiver, and further comprising an element having a body ntion projecting through said opening an having a cross section and constructed to effect the frictional engagement with the sides of said opening and urther having a forward portion adapted to engage or be held into engagement with the actuating diaphragm of the telephone receiver. The frictional engagement between said element and the sides of the opening in said member is of such degree that the vibrations are transferred without interference for all relative positions between said member and said element.

The invention is applicable for all other types of electro responsive devices as well as telephone receivers and the diaphragm, or equivalent, may form a. part or combine with an amplifier, relay, repeater or the like.

The invention is also applicable for use with the receiving levice of an amplifier in conjunction with a dictating talking maof acoustic machine. n

chine or other type such arrangement, the amplified sounds of the receiving emitted by the diaphragm device are transferred to the diaphragm of the talking machine and the recording stylus of the same actuated to record the message or conversation onto the record. In such form of my invention, the hollow symmetrical member may be attached to the diaphragm of the receiving device and the element indrawings, in wh Figure 1 is an elevation, partly in vertical central section, showing the use of my invention with a telephone receiver and the transmitter of an amplifier; and

Fig- 2 shows in detail elevation a cylindrical record of a dictatin talking machine combined with another orm of my invention applied to the receiving device of an am li er.

eferring to Fig. 1, the transmitter 1 of the amplifier is shown mounted on the pedestal 2 suitable for resting on the top of a table or the like. The transmitter 1 is provided with the face rtion 3 adapted to receive vand support t e telephone receiver 4. Preferably,. he face portion 3 is provided with the central openin 5 of restricted cross section and also with the peripheral flange 6 of suitable construction to form a seal wit the face of the cap 7 of the telephone receiver 1. For convenience of construction, the face portion 3 may be screw-threaded onto the transmitter 1 of the amplifier.

The hollow symmetrical member 8 is shown attached at its base 8 to the diaphragm 9 of the amplifier. The opening -10 at the front of the hollow member 8 is of symmetrical cross section and of a predetermined diameter. The element 11 is pro vided with the body portion 12, shown as cylindrical, and of a diameter effecting a certain degree of friction against the sides of the opening 10. The face 13 of said body portion 12 is of convex construction or otherwise formed to effect the desired engagement with the diaphragm 14 of telephone receiver 4 for all normal positions of diaphragm 14 assumed during its movement under action of the magnets 15 of the telephone receiver. The base portion of member 11 is prefera' similar to the inner walls of the hollow memher 8, to thereby maintain the body portion bly proper alinement relative to the sides of the opening 10 and the diaphragm 14: of telephone receiver 4:. The spring 16, combined preferably with a pad 1 of felt or the like, serves to effect a gentle but yielding pressure again-st the element 11 to thereby maintain the desired continuous engagement of the face 13 with the diaphragm 14: of the telephone receiver.

The operation of such use of my inven- .tion is as follows. Upon vibration of the telephone diaphragm 14 the element 11 will be vibrated in correspondence thereto, causing the body portion 12 to reciprocate under definite amplitude and frequency conditions in the opening 10 of hollow member 8, thereby by reason of the frictional engagement between said element 11 and the sides of opening 10, causing the body portion of said hollow member 8 to also vibrate in correspondence and eventually setting up corresponding vibrations in the diaphragm 9 of the amplifier.

The hollow member 8 may be formed of vulcanite or similar material and the body portion 12 of element 11 may also be of vulcanite but is preferably of amber or like material. l have discovered that amber is a highly advantageous material for the body portion 12 and vulcanite for the hollow member 8, such advantages being apparently derived by reason of the relatively low mechanical friction, the high sensibility of transference of vibration due possibly to static electrical efiects, the relatively high susceptibility of engagement of the face 13 of the reciprocated element 11 with the actuated diaphragm of the telephone receiver, etc. In the above form of my invention the arrangementis advantageous for transmission of conversation from a telephone system to an amplifier, and to this end a suitable support for the receiver is provided by the fork or bracket20 shown carried by the device 21 pivoted at 22. The angle of inclination of the telephone receiver is chosen to utilize such portion of the weight of the receiver to cause suflicient pressure of the telephone cap 7 against the face portion 3 of the amplifier transmitter 1, in order to effect the desired seal.

The ivoted device 21 12 of element L1 in is for use with the V transmitter of the amplifier when it is desired to talk, e., dictate, directly into the amplifier, for such letter or other communication on a talking device to be transcribed later. To this and similar ends, the device is provided with the mouth piece 23, having its inner opening directed toward the acoustic diaphragm 24 disposed in said device 21 so that when the telephone receiver is removed and the device its pivot 22, the acoustic diais brought into proper relation to the face 13 of the reciprocating element 11.

purposes as recording a The horn 25 is constructed in correspond ence to the face portion 3. Accordingly, upon direct dictating, the sound waves will impinge on acousti diaphragm 24, causing the element 11. in coaction with the hollow member 8 to transfer the conversation to the diaphragm 9 of the amplifier.

In Fig. 2, of the amplifier in combination with my vibration transferring means and a dictating talking machine. As oneembodiment of such use, I have indicated the hollow member 27 secured to the diaphragm 28 of the amplifier receiver, e., the actuating diaphragm, and the reciprocating element 29 constructed to engage the diaphragm 30 of the dictating talking machine iii-embodying any suitable support for the diaphragm'30 and any approved type of recording stylus 32 and spindle for the record cylinder 33. Accordingly,

hragm 28 of the amplifier receiver 26, the IOllOW member 27 will be actuated and the vibrations transferred to the reciprocating element 29 and in turn to the diaphragm 30 of the dictating machine. The conversation will be reproduced from the record by means of the reproducing sound box 'of the talking machine, as will be understood.

The above apparatuses are especially useful for recording and reproducing telephone conversation, vocal dictation, speeches, testimony, etc, and, other communication in which the intensity of tone is or may be varied within wide limits, Notwithstanding such great variations in intensity I have discovered that the invention effects a practic-ally exact record or reproduction of the original tones and without material loss of clearness and definition.

It will be apparent that my invention is also useful for other types of electro-responsive and acoustically actuated devices for mechanically transferring vibrations of all character, irrespective of amplitude and frequency.

I claim:

1 The combination of vibratable means,

I have shown the receiver 26 upon vibration of the dia vibration responsive means and vibration transferring means comprising a member connected with said vibratable means and a second member in relatively movable frictional relationship with said first named member and controlling said vibration responsive means.

2. The combination vibration responslve ing said member, a second member, vibration responsive means controlled by said second member and vibration transferring means connecting said actuating member and said second member, said vibration transferring means comprising a movable element controlled by one of said members and a second movable element in sliding frictional relationship with said first named movable element and controlling the movement of the other of said members.

4. The combination with a diaphragm, vibration responsive means for actuating said diaphragm, a member, vibration responsive means controlled by said member and vibration transferring means connecting said diaphragm and said member, said vibration transferring means comprising an element controlled by 'said diaphragm and a second element in sliding relation with said first named movable element and controlling the movement of said member. a

5. The combination with a diaphragm, vibration responsive means for actuating said diaphragm, a second diaphragm, vibration responsive means controlled by said second diaphragm and vibration transferring means connecting said diaphragms, said vibration transferring means comprising an element controlled by said first named diaphragm and a second element in sliding frictional relationship with said first named movable element and controlling the movement of the other of said members.

6. The combination with a diaphragm and vibration responsive means for actuating said diaphragm, of a second diaphragm, v b 'ation responsive means controlled by said second diaphragm and vibration transferring means connecting said diaphra s,sa1d transferring means comprising a ho low element provided wit an opening and a second element having a body portion projecting through said opening and in sliding frictional relationship with the sides of sai openin v The combination with a diaphragm and vibration responsive means for actuating said diaphragm, of a second dia hragm, vibrat'ion responsive means contro led by said second diaphragm and vibration transferring ineans connecting said diaphragms, said transferring means comprising a hollow element provided with an opening, a secon element having a body portion projecting through said opening and in sliding frictional relationship with the sides of said opening and yielding means controlling said second element.

8. The combination with a diaphragm and vibration responsive means for actuating said diaphragm, of a second diaphragm, vibration responsive means controlled by said second diaphragm and vibration transferring means connecting said diaphragms, said 1 her,

vib'ation transferring means transferrin means comprising a hollow element attached to one of said diaphragms, said hollow element being provided with an opening, a second element having a body portion projecting through said opening in sliding frictional relationship with the sides of said opening and yielding means for cffecting engagement of said second element with the other of said diaphragms.

9. The combination of an actuating memvibration responsive means for actuating said member, a second member, vibration responsive means controlled by said second member and vibration transferring means connecting said actuating member and said second member, said vibration transferring means comprising a movable element controlled by one of said members and a second movable element in sliding frictional relationship with said first named movable element and controlling the movement of the other of said members, said elements having their frictionally engaging portions formed of electrically insulating material.

10. The combination with a diaphragm, vibration responsive means for actuating said diaphragm, a member, vibration responsive means controlled by said member and connecting said member, said vimeans comprising an element controlled by said diaphragm and a second element in sliding frictional relation with said first named movable element and controlling the movement of said member, said elements having their frictionally engaging portions formed of electrically insulating material.

11. The combination with a diaphragm and vibration responsive means for actuating said diaphragm, of a second diaphragm, vibration responsive means controlled by said second diaphragm and vibration transferring means connecting said diaphragms, said transferring means comprising a hollow element attached to one of said diaphragms, said hollow element being provided with an opening, a second element pro ecting through having a body portlon said opening in sliding frictional relationship with the sides of said opening and yielding means for effecting engagement of said second element with the other of said diaphragms, the frictionally engaging portions of said elements being formed of dielectric materials.

12. The combination of a transmitting device, a support therefor, a casing, a diaphragm, a mouth iece, said diaphragm and said mouth iece eing carried by said casing, means or pivoting said casing on said support, and holding means on said casing adapted to hold a telephone receiver when said casing is in a certain position, said diasaid diaphragm and bration t ansferring phragm being brought into operative relation to said transmitting device when said casing is in another certain position.

13. The combination of a transmitting device, a stand therefor, an acoustic diaphragm, a mouth piece, a frame carrying said diaphragm and said pivotally connecting said frame and said support, a stop for retaining said frame at a certain position, and holding means on said frame for holding a telephone receiver in sealed relation With said transmitting demouth piece, means 14. The combination of a stand, a transmitting device supported thereby in an inclined upwardly, frame pivoted on said stand, a stop holding said frame in a certain forward position, holding means on said frame effective When said frame is in said certain forward posi tion for holding a telephone receiver in a downwardly inclined position in sealed relation to said. transmitting device and a diaphragm positioned in said frame to be rought into, operative, relation with said transmitting device when said frame is moved to a certain rearward position.

In testimony whereof I have signed this specification.

HARALD SMITH.-

rearwardly direction, a. 

